White balloon attacks London! (Just kidding)

Huge inflatable sphere was placed over the busy Oxford Circus intersection to promote the Lumiere London light festival Crazy light show this way! (Paop | Dreamstime.com)

In January 2016, a special festival came to London, England: Lumiere London. It was four nights of exceptional light installations perfect for a nighttime wander through the city. ("Installation" is really just a fancy name for a very large piece of art.)

Now in 2018, Lumiere London is set to return to the city for the second time. With the fest just around the corner (January 18-21!), organizers are already busy getting everyone excited. It is safe to say that this Friday's surprise installation really caught everyone's attention.